233 lines
6.9 KiB
Awk
233 lines
6.9 KiB
Awk
#!/usr/bin/awk -
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#
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# $NetBSD: MAKEDEV.awk,v 1.10 2003/12/08 23:49:25 dmcmahill Exp $
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#
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# Copyright (c) 2003 The NetBSD Foundation, Inc.
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# All rights reserved.
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#
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# This code is derived from software contributed to The NetBSD Foundation
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# by Jaromir Dolecek.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. All advertising materials mentioning features or use of this software
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# must display the following acknowledgement:
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# This product includes software developed by the NetBSD
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# Foundation, Inc. and its contributors.
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# 4. Neither the name of The NetBSD Foundation nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# Script to generate platform MAKEDEV script from MI template, MD
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# MAKEDEV.conf and MD/MI major lists
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#
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# Uses environment variables MACHINE/MACHINE_ARCH to select
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# appropriate files, and NETBSDSRCDIR to get root of source tree.
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BEGIN {
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# top of source tree, used to find major number list in kernel
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# sources
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top = ETCDIR "/../sys/"
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if (system("test -d '" top "'") != 0) {
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print "ERROR: can't find top of kernel source tree ('" top "' not a directory)" > "/dev/stderr"
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exit 1
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}
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machine = ENVIRON["MACHINE"]
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maarch = ENVIRON["MACHINE_ARCH"]
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if (!machine || !maarch) {
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print "ERROR: 'MACHINE' and 'MACHINE_ARCH' must be set in environment" > "/dev/stderr"
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exit 1
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}
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# file with major definitions
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majors[0] = "conf/majors"
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if ((maarch == "arm" || maarch == "armeb") && system("test -f '" top "arch/" machine "/conf/majors." machine "'") != 0)
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majors[1] = "arch/arm/conf/majors.arm32";
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else if (machine == "evbsh5") {
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majors[1] = "arch/evbsh5/conf/majors.evbsh5";
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majors[2] = "arch/sh5/conf/majors.sh5";
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} else if (machine == "sbmips")
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majors[1] = "arch/evbmips/conf/majors.evbmips";
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else
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majors[1] = "arch/" machine "/conf/majors." machine;
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# process all files with majors and fill the chr[] and blk[]
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# arrays, used in template processing
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for (m in majors) {
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file = top majors[m]
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if (system("test -f '" file "'") != 0) {
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print "ERROR: can't find majors file '" file "'" > "/dev/stderr"
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exit 1
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}
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while (getline < file) {
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if ($1 == "device-major") {
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if ($3 == "char") {
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chr[$2] = $4
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if ($5 == "block")
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blk[$2] = $6
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} else if ($3 == "block")
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blk[$2] = $4
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}
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}
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close(file)
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}
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# read MD config file for MD device targets
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cfgfile = ETCDIR "/etc." machine "/MAKEDEV.conf"
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if (system("test -f '" cfgfile "'") != 0) {
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print "ERROR: no platform MAKEDEV.conf - '" cfgfile "' doesn't exist" > "/dev/stderr"
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exit 1
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}
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# skip first two lines - RCS Id and blank line
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getline < cfgfile
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getline < cfgfile
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MDDEV = 0 # MD device targets
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while (getline < cfgfile) {
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if (MDDEV)
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MDDEV = MDDEV "\n" $0
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else
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MDDEV = $0
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}
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close(cfgfile)
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# determine number of partitions used by platform
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# there are three variants in tree:
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# 1. MAXPARTITIONS = 8
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# 2. MAXPARTITIONS = 16 with no back compat mapping
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# 3. MAXPARTITIONS = 16 with back compat with old limit of 8
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# currently all archs, which moved from 8->16 use same
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# scheme for mapping disk minors, high minor offset
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# if this changes, the below needs to be adjusted and
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# additional makedisk_p16foo needs to be added
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incdir = machine
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diskpartitions = 0
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diskbackcompat = 0
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while (1) {
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inc = top "arch/" incdir "/include/disklabel.h"
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if (system("test -f '" inc "'") != 0) {
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print "ERROR: can't find kernel include file '" inc "'" > "/dev/stderr"
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exit 1
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}
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incdir = 0
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while (getline < inc) {
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if ($1 == "#define" && $2 == "MAXPARTITIONS")
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diskpartitions = $3
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else if ($1 == "#define" && $2 == "OLDMAXPARTITIONS")
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diskbackcompat = $3
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else if ($1 == "#define" && $2 == "RAW_PART")
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RAWDISK_OFF = $3
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else if ($1 == "#include" && $2 ~ "<.*/disklabel.h>") {
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# wrapper, switch to the right file
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incdir = substr($2, 2)
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sub("/.*", "", incdir)
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break;
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}
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}
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if (diskpartitions)
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break;
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if (!incdir) {
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print "ERROR: can't determine MAXPARTITIONS from include file '" inc "'" > "/dev/stderr"
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exit 1
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}
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}
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MKDISK = "makedisk_p" diskpartitions # routine to create disk devs
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DISKMINOROFFSET = diskpartitions
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if (diskbackcompat) {
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MKDISK = MKDISK "high"
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DISKMINOROFFSET = diskbackcompat
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}
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RAWDISK_NAME = sprintf("%c", 97 + RAWDISK_OFF) # a+offset
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# initially no substitutions
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devsubst = 0
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deventry = ""
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}
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/%MI_DEVICES_BEGIN%/ {
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devsubst = 1;
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next
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}
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/%MI_DEVICES_END%/ {
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devsubst = 0;
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next
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}
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# filter the two unneeded makedisk_p* routines, leave only
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# the one used
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/^makedisk_p8\(\) \{/, /^\}/ {
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if (MKDISK != "makedisk_p8")
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next;
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}
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/^makedisk_p16\(\) \{/, /^\}/ {
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if (MKDISK != "makedisk_p16")
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next;
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}
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/^makedisk_p16high\(\) \{/, /^\}/ {
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if (MKDISK != "makedisk_p16high")
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next;
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}
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# special cases aside, handle normal line
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{
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sub(/^%MD_DEVICES%/, MDDEV)
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sub(/%MKDISK%/, MKDISK)
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sub(/%DISKMINOROFFSET%/, DISKMINOROFFSET)
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sub(/%RAWDISK_OFF%/, RAWDISK_OFF)
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sub(/%RAWDISK_NAME%/, RAWDISK_NAME)
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# if device substitutions are not active, do nothing more
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if (!devsubst) {
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print
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next
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}
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}
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# first line of device entry
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/^[a-z].*\)$/ {
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if (length(deventry) > 0) {
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# We have a previous entry to print. Replace all known
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# character and block devices. If no unknown character
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# or block device definition remains within the entry,
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# print it to output, otherwise scrap it.
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for (c in chr)
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gsub("%" c "_chr%", chr[c], deventry)
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for (b in blk)
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gsub("%" b "_blk%", blk[b], deventry)
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if (deventry !~ /%[a-z]*_chr%/ && deventry !~ /%[a-z]*_blk%/)
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print deventry
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}
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deventry = $0
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next
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}
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# template line within device substitution section - just keep appending
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# to the current entry
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{
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deventry = deventry "\n" $0
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}
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